JP2795175B2 - Ventilation system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system having a single ventilation device as a core.

[0002]

2. Description of the Related Art Conventionally, a ventilation system may be configured such that a plurality of terminal units are connected to a single ventilation device by a branch duct, or the ventilation device is operated independently without connecting a duct. Many. The former is disclosed, for example, in JP-A-3-1
As disclosed in Japanese Patent No. 10341, the airflow required by each terminal unit is calculated by a ventilator, and the ventilator itself determines its own airflow and blows air to the branch duct. The latter is often configured so that a single ventilator can be operated from a plurality of locations by a plurality of remote controllers. The ventilation system, which is the core of the ventilation system, has a different ventilation system depending on the system in which the ventilation system is installed. Therefore, the switching setting is performed so as to perform a different function for each system by using a switch for switching the capacity according to the system to be incorporated.

[0003] In addition, some ventilation systems that ventilate a plurality of locations from a plurality of terminal units by using branch ducts may or may not include dampers that open and close at respective end portions of the branch ducts. In a system equipped with such a damper, the ventilation to the terminal unit can be shut off by closing the damper, so the ventilator may be operated with the total air volume of the requested terminal unit. If there is a required air volume even from one terminal unit, the air volume required by the terminal unit cannot be secured unless the ventilator is operated with the sum of the required air volumes of all the terminal units. Therefore, in this case, it is necessary to change the function of the ventilator depending on the system to be incorporated.

[0004] In the actual installation of the ventilation system, it is quite troublesome and troublesome to switch the function of the ventilator or change the function according to the difference in the system configuration as described above. Construction mistakes such as forgetting to change or change are also likely to occur. Therefore, the system is often configured with a ventilation device of a model that does not require changes in settings and functions.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is an object of the present invention to eliminate the necessity of switching the function of a ventilator even if the system configuration is different. Another object of the present invention is to provide a ventilation system capable of preventing the occurrence of construction errors, and to provide a ventilation system which can easily cope with a branch duct having or not having a damper.

[0006]

According to a first aspect of the present invention, there is provided an air supply system comprising: The ventilator is provided with an additional air supply mode to perform the air supply at an absolute air volume, and a post-priority air supply mode for giving priority to a later request with respect to a plurality of requests for the air volume at the absolute air volume or the relative air volume. The unit that transmits the request for the air volume to the ventilation device, causes the ventilation device to transmit an identification signal that enables the identification of the addition ventilation mode at the start of the ventilation,
The unit that sends the request for the air volume in absolute or relative air volume to the ventilator shall be sent to the ventilator with an identification signal that allows identification of the rear priority ventilation mode. A means is provided which includes an air flow rate determining means for determining an addition air blowing mode or a rear priority air blowing mode based on a signal, and determining an air blowing amount according to the mode.

In order to achieve the above object, an invention according to a second aspect of the present invention is directed to an additional air blowing mode for adding an air blowing amount of each of these requests to a request for an air blowing amount based on an absolute air volume from a plurality of units; For a plurality of requests for the air volume in the absolute air volume or the relative air volume, the ventilator is provided with a post-priority air mode in which a later request is prioritized and the air is ventilated. The unit that transmits to the ventilator sends an identification signal that allows the user to identify the addition ventilation mode at the start of ventilation to the ventilation device, and sends a request for the absolute or relative air volume to the ventilation device. Makes the ventilation device transmit an identification signal that enables identification of the rear priority ventilation mode, and the ventilation device determines the addition ventilation mode or the rear priority ventilation mode based on these identification signals, and responds accordingly. Air flow rate determining means for determining the amount of air blown, and a ventilation device operating in any of the above-described additional air blowing mode or the rear priority air blowing mode, when an identification signal different from the mode has been transmitted, Means for changing to a mode based on the identification signal transmitted later.

In order to achieve the above object, a third aspect of the present invention is a ventilation system for connecting a unit to each branch duct end via a branch duct to a ventilating apparatus and performing ventilation from one location to a plurality of locations. For each unit at the end of the branch duct, a predetermined required air volume is required for the ventilation device to be required in absolute air volume, and the required air volume for the ventilation device is 0 based on the sum of the required air volume from each unit. A means is provided which has a switching means for switching between a mode in which air is blown by subtracting the amount of air blown and a mode in which air is blown with the sum of the amount of air required from each unit as long as the amount of air required from all units does not become zero. .

[0009]

According to the first aspect of the present invention, in a system configuration in which a unit for transmitting a request for an air volume in an absolute air volume to a ventilator is connected, it is possible to identify that the unit is in an additional air mode at the start of air blowing. A signal is transmitted to the ventilator, whereby the ventilator determines the additive ventilation mode, and determines and blows the air volume according to the additive ventilation mode. Also, in a system configuration of a unit that transmits a request for an air volume in an absolute air volume or a relative air volume to the ventilation device, an identification signal that can identify the rear priority ventilation mode is transmitted to the ventilation device. The priority air blowing mode is determined, and the air volume is determined and air is blown by the rear priority air blowing mode.

According to the second aspect of the present invention, in a system configuration in which a unit for transmitting a request for an air volume in an absolute air volume to a ventilator is connected, it is possible to identify the addition air mode when the air starts from the unit. A signal is transmitted to the ventilator, whereby the ventilator determines the additive ventilation mode, and determines and blows the air volume according to the additive ventilation mode. If the system configuration changes or if an identification signal for the rear priority ventilation mode is sent to the ventilator on the way,
The mode is switched from the additive ventilation mode to the rear priority ventilation mode, and when the identification signal of the additional ventilation mode is transmitted to the ventilator, the mode is switched again to the additive ventilation mode. Also, in a system configuration of a unit that transmits a request for an air volume in an absolute air volume or a relative air volume to the ventilation device, an identification signal that can identify the rear priority ventilation mode is transmitted to the ventilation device. The priority air blowing mode is determined, and the air volume is determined and air is blown by the rear priority air blowing mode. If the system configuration changes or the identification signal of the additional ventilation mode is transmitted to the ventilation device on the way, the mode switches from the rear priority ventilation mode to the addition ventilation mode, and the identification signal of the rear priority ventilation mode is transmitted to the ventilation device. Then, the mode is switched again to the rear priority air blowing mode.

According to the third aspect of the present invention, in a system configuration in which a ventilation unit is connected by a branch duct having a damper, the air flow of the air flow having a required air flow of 0 is subtracted from the sum of the air flow required from each unit. In a system configuration in which units are connected by a branch duct without a damper, unless the required air volume from all ventilation units becomes zero, the sum of the required air volume from each ventilation unit is used. The mode can be switched to the blowing mode.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 shows a system configuration relating to a communication system of a ventilation system as an embodiment, and FIG. 2 similarly shows a system configuration relating to the configuration of the ventilation system. This ventilation system comprises four air conditioners 3a, 3b, 3c, 3 in this embodiment as one ventilator 1 and a plurality of units connected thereto in parallel by a branch duct 2.
d. The ventilation device 1 is a simultaneous heat supply / exhaust type total heat exchange ventilation device, and has a built-in humidifier 4 for humidifying the supply air flow. The air conditioner 3 sets the room to a cooling atmosphere or a heating atmosphere while circulating the air in the room where the air conditioner is installed, and sends about 20% of the circulating air volume from the ventilator 1 through the branch duct 2, Supply indoors. However, most fundamentally, a system configuration including the ventilation device 1 serving as a main body of the air blowing function and a plurality of units as terminal devices for blowing air into each room may be used.

The ventilator 1 and four air conditioners 3a, 3b, 3
c and 3d are connected by a communication line 5 as shown in FIG.
It is operated by two remote controllers 6a and 6b. Remote control 6
The operation systems a and 6b are divided into two groups. One group includes the remote controller 6a, the air conditioners 3a and 3b, and the ventilator 1 as shown in FIG. 3, and the other group includes the remote controller 6b and the air conditioner 3 as shown in FIG.
c, 3d and the ventilation device 1. That is, each group is given a start / stop or control signal by the remote controllers 6a and 6b belonging to the group. Since the ventilator 1 straddles two groups, it operates in conjunction with the operation of the air conditioners 3a, 3b, 3c, 3d in any of the groups. The ventilator 1 is provided with a dedicated operation unit (a plurality of dedicated remote controls 7a, 7b) separately from the remote controllers 6a, 6b.
b, or an operation unit of a centralized management system, but the following description will be made using the dedicated remote controllers 7a and 7b).

An operation request from the remote controllers 6a and 6b to the ventilator 1 is transmitted via the communication line 5 to the air conditioners 3a, 3b, 3c and 3 in the group once, as shown in FIG.
d. Each of the air conditioners 3a, 3b,
In 3c and 3d, the absolute value of the required air flow (normally about 20% of the circulating air flow of the air conditioner) (for example, requesting air blowing at a capacity of 500 cubic meters per hour) is sent to the ventilator 1 in 3c and 3d. Transmit via the communication line 5. The request for the air volume to the ventilator 1 is made when the ventilation system is started up, and the required air volume is held in the ventilator 1. The signals relating to the air volume request transmitted from each of the air conditioners 3a, 3b, 3c, 3d to the ventilator 1 include:
The identification signal is sent together so that the ventilator 1 can identify the request from the air conditioners 3a, 3b, 3c, 3d.

The dedicated remote controllers 7a and 7b of the ventilation device 1
As shown in FIG. 6, it is often used when configuring a ventilation system with a single ventilation device 1. That is, the ventilation system is configured such that the dedicated remote controllers 7a and 7b installed at a plurality of locations can stop the operation of the ventilator 1 and request the air volume. The operation request and the required air volume from the dedicated remote controllers 7a and 7b to the ventilator 1 (either an absolute air volume or a relative air volume may be used, but a normal user can easily understand and use the relative air volume such as strong, medium, and weak). Each is directly transmitted to the ventilator 1 via the communication line 5 as shown in FIG. The request for the air volume to the ventilator 1 is made at any time. An identification signal is transmitted together with a signal relating to the air volume request transmitted from the dedicated remote controllers 7a and 7b to the ventilation device 1 so that the request from the dedicated remote controllers 7a and 7b can be identified on the side of the ventilation device 1. Is done.

The ventilation device 1 is connected to the air conditioners 3a, 3 via a communication line 5.
A control device 8 connected to b, 3c, 3d is incorporated. The control device 8 includes an air flow determining system, a ventilation mode determining system, and a humidifier operation determining system based on the transmitting and receiving device 9 as shown in a block diagram in FIG. Communication line 5
The transmission / reception device 9 connected to the system determines the transmitted signal and distributes the signal to the air volume determination system, the ventilation mode determination system, or the humidifier operation determination system. The air volume determining system is configured with an air volume determining unit 10 and a fan driving unit 11 as cores. The fan driving unit 11 is configured to supply the air supply fan 12 of the ventilation device 1 to obtain the air volume determined by the air volume determining unit 10.
The exhaust fan 13 is controlled while being monitored by a supply air flow sensor 14 and an exhaust air flow sensor 15, respectively. The air flow determining means 10 identifies whether the air conditioners 3a, 3b, 3c, 3d or the dedicated remote controllers 7a, 7b are used by the identification signal together with the operation command from the air conditioners 3a, 3b, 3c, 3d or the dedicated remote controllers 7a, 7b. . Air conditioners 3a, 3b,
3c, 3d, each air conditioner 3a, 3d.
The required air volume of b, 3c, 3d is added to determine an additional air volume mode for determining the air volume, and the air is blown in the additional air volume mode via the fan driving means 11. The air flow rate determining means 10 is provided with a changeover switch 16 for switching its function.
On / off.

That is, in the system configuration as shown in FIGS. 1 and 2, there is an operation command from the air conditioners 3a and 3b in one group, and a stop command from the air conditioners 3c and 3d in the other group. In each case, each air conditioner 3a, 3b, 3c,
If a damper is connected to the 3d outside air intake,
When the changeover switch 16 is turned on, the air is blown at the sum of the required air volumes of the air conditioners 3a and 3b. All air conditioners 3a,
If there is an operation command from 3b, 3c, 3d and no damper is connected, the changeover switch 16
Is turned off, and the sum of the required air volumes of all the air conditioners 3a, 3b, 3c, 3d is sent as the actual air volume (FIG. 9).
reference). On the other hand, if it is identified as an operation command from the dedicated remote controllers 7a and 7b, the air is blown in the rear priority air blowing mode in which the air volume required later is prioritized.

Further, for the ventilator 1 operating in either the addition ventilation mode or the rear priority ventilation mode,
When an identification signal different from the mode is transmitted,
The air volume determining means 10 has an algorithm for changing to a mode based on the identification signal transmitted later. Therefore, even in the addition ventilation mode, the exclusive remote control 7
If there is a request for the air volume from a and 7b, the air blowing mode is changed to the rear priority air blowing mode, and even if the air priority is required from the air conditioners 3a, 3b, 3c and 3d even in the rear priority air blowing mode, The air blowing mode is changed to the additional air blowing mode.

The ventilation mode determining system is composed of a ventilation mode determining means 17 and a ventilation mode switching means 18 as a core.
Ventilation device 1 to realize the ventilation mode determined by 7
The damper 19 is controlled while monitoring the indoor temperature and the outdoor temperature with the indoor temperature detection sensor 20 and the outdoor temperature detection sensor 21, respectively. The opening and closing operation of the damper 19 switches between heat exchange ventilation in which air supply and exhaust is performed through the total heat exchanger and normal ventilation in which air supply and exhaust is performed by bypassing the total heat exchanger by a bypass or the like.

The humidifier operation determining system is constituted by a humidifier operation determining means 22 and a humidifier driving means 23 as cores, and the humidifier driving means 23 implements the humidifying operation determined by the humidifier operation determining means 22. The humidifier 4 is controlled while monitoring the outdoor temperature with the outdoor temperature detection sensor 21.

When the ventilation system having the above configuration is actually constructed, the system configuration includes a plurality of air conditioners 3a, 3b, 3
c, 3d may be connected by the branch duct 2, or the ventilator 1 may be independently connected to a plurality of dedicated remote controllers 7
a, 7b, a plurality of air conditioners 3a, 3b, 3c, 3d are connected by a branch duct 2 as shown in FIG. 7 and dedicated remote controllers 7a, 7b are also connected. It is not necessary to change the function of the ventilator 1 or change the function. The function will be described with reference to the ventilation system having the complex system configuration shown in FIG. 7. First, in the stop state 24 shown in FIG. 10, the ventilator 1 does not recognize the system configuration. It is in a standby state in which an operation command from any of 3a, 3b, 3c, and 3d is received and can be executed.

In this standby state, the dedicated remote control 7
When the operation command is transmitted from a and 7b, the ventilator 1 shifts from the state 24 to the state 25 in FIG. 10 and performs air blowing for determining the air volume in the rear priority air blowing mode. In a state where the air volume is not set only by the operation stop signal or in the case of the dedicated remote controllers 7a and 7b having no air volume setting function, the ventilator 1 has its own maximum air volume as an initial value and operates at the air volume. When a stop command is transmitted from the dedicated remote controllers 7a and 7b, the state shifts from state 25 to state 24 in FIG.
Return to the standby state.

In the standby state, the remote controllers 6a, 6a
When the operation command from b is transmitted via the air conditioners 3a, 3b, 3c, 3d, the ventilator 1 switches to the state 24 in FIG.
Then, the flow goes to the state 26 to perform the air blowing for determining the air volume in the addition air blowing mode. At this time, if some of the air conditioners 3a and 3b have transmitted the stop request signal, the changeover switch 16 is turned on, and the air is blown at the air volume by adding the required air volume of the air conditioners 3c and 3d that do not have the stop request. Let All air conditioners 3a, 3
If there is an operation request from b, 3c, 3d, changeover switch 1
6 is turned off, and the air is blown at the air volume obtained by adding all the required air volumes. As described above, when an identification signal different from that mode is transmitted to the ventilator 1 operating in either the addition ventilation mode or the rear priority ventilation mode, the air volume determination means 10 transmits the identification signal later. The mode is changed to the mode based on the identification signal that has been given.

Embodiment 2 FIG. In the ventilation system having the system configuration according to the first embodiment illustrated in FIG. 2, the air flow rate is determined depending on whether the branch duct 2 to each of the air conditioners 3 a, 3 b, 3 c, and 3 d has a damper that opens and closes the branch duct 2. The methods cannot be the same. That is, the air conditioners 3a, 3
If a part of b, 3c and 3d is a stop request and a part is an operation request, in a system configuration without a damper, air is blown at an air volume obtained by adding a required air volume of the air conditioners 3a and 3b having an operation request. Even if the air conditioners 3c and 3d are stopped, the amount of air leaking from the branch duct 2 is insufficient.
Embodiment 2 solves this problem. Since the basic configuration of the ventilation system itself is the same as that shown in the first embodiment, the drawings of the first embodiment are referred to, and the description of the overlapping parts will be omitted.

In this ventilation system, when there is no damper, a mode in which the changeover switch 16 is turned off is selected.
That is, the ventilator 1 in the state 26 in FIG. 10 enters the standby state of the state 24 when all the air conditioners 3a, 3b, 3c, and 3d do not receive an operation command.
State 26 is maintained as long as no operation command is lost from a, 3b, 3c, 3d, and all air conditioners 3a, 3b, 3c, 3
The air is blown at the air volume according to the sum of the required air volumes of d. If there is a damper, the mode in which the changeover switch 16 is turned on is selected, and the air is blown at the air volume by adding the required air volume of the air conditioners 3a and 3b without a stop request. Therefore, the ventilation system can be easily configured by the ventilation device 1 of the same model whether or not the branch duct 2 has a damper.

[0026]

As is apparent from the above description of the embodiment, according to the first and second aspects of the present invention, even if the system configuration is different, it is not necessary to perform a function switching setting operation of the ventilator, etc. A ventilation system that hardly causes construction errors can be obtained.

According to the third aspect of the present invention, there is provided a ventilation system which can easily cope with a system having a damper in a branch duct or a system having no damper simply by switching the switching means without changing the model of the ventilation device. can get.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a system configuration relating to a communication system of a ventilation system as one embodiment of the present invention.

FIG. 2 is a configuration diagram showing a system configuration of a ventilation system as one embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a group configuration in the system configuration of FIG. 1;

FIG. 4 is a configuration diagram showing a system configuration of a ventilation system as one embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a flow of a control signal of the ventilation system of FIG. 1;

FIG. 6 is an explanatory diagram showing a flow of a control signal of the ventilation system of FIG. 4;

FIG. 7 is a configuration diagram showing a system configuration of another ventilation system as one embodiment of the present invention.

FIG. 8 is a block diagram showing the configuration of the control device for the ventilation device according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram showing functions of a changeover switch according to the embodiment of the present invention.

FIG. 10 is an explanatory diagram illustrating an algorithm of control of an air volume determining unit in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ventilator 2 Branch duct 3a Air conditioner 3b Air conditioner 3c Air conditioner 3d Air conditioner 5 Communication line 6a Remote control 6b Remote control 7a Dedicated remote control 7b Dedicated remote control 8 Control device 10 Air volume determination means 16 Switch

Claims (3)

(57) [Claims] 1. An air supply mode in which a request for an absolute air volume from a plurality of units is added to the air volume of each of the requests and air is blown, and a plurality of air volumes in an absolute air volume or a relative air volume. In response to the request, the ventilator is provided with a later-priority ventilation mode in which a later request is prioritized and air is blown, and a unit that sends a request for an absolute airflow to the ventilator is added to the unit at the start of blowing. A unit that transmits an identification signal that allows the ventilation device to be identified as being in the ventilation mode and transmits a request for an air volume in an absolute air volume or a relative air volume to the ventilator has a rear priority air mode. An identification signal for enabling identification is transmitted to the ventilation device, and the ventilation device determines an addition ventilation mode or a rear priority ventilation mode based on these identification signals, and an air volume determination unit that determines a ventilation volume according to the determined ventilation mode. Ventilation system with configuration. 2. An additional air supply mode for adding airflows of absolutely required airflows from a plurality of units and sending airflows by adding the airflows of the respective requests, and a plurality of airflows of absolute airflows or relative airflows. In response to the request, the ventilator is provided with a later-priority ventilation mode in which a later request is prioritized and air is blown, and a unit that sends a request for an absolute airflow to the ventilator is added to the unit at the start of blowing. A unit that transmits an identification signal that allows the ventilation device to be identified as being in the ventilation mode and transmits a request for an air volume in an absolute air volume or a relative air volume to the ventilator has a rear priority air mode. An airflow determining means for transmitting an identification signal for enabling identification to the ventilator, determining whether the ventilation system is to use the additional airflow mode or the rear priority airflow mode based on these identification signals, and determining an airflow volume according to the determined airflow mode. When an identification signal different from the mode is transmitted to a ventilator operating in one of the above-described additional ventilation mode and the rear priority ventilation mode, the ventilation device is based on the identification signal transmitted later. Means for changing to a mode. 3. A ventilation system in which a unit is connected to each branch duct end via a branch duct to a ventilator to ventilate a plurality of places from one place, wherein each unit at the branch duct end has the above-mentioned unit. The ventilator is required to request a predetermined required air volume as an absolute air volume, and the ventilator blows the air by subtracting the air volume of the air volume with the required air volume of 0 from the sum of the air volume required from each unit. A ventilation system comprising switching means for switching between a mode and a mode in which air is blown with the sum of the required airflow from each ventilation unit unless the required airflow from all ventilation units becomes zero.